!!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!!  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       


Align T-REX 450SA ARF
Seller:  Erick Royer
Details:   $150.00   |  8/27/2008   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Helicopters >> Electric RC Helis >> !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!!
Page: [1]

Login
Message << Older Topic   Newer Topic >>
!!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 5:40:45 AM   
AAAsnwbordr


 

Posts: 85
Joined: 10/24/2004
From: Bellingham, WA, USA
Status: offline 		Ok, i have a mini electric Dragonfly heli and need some help. First, i got a lithium 3-cell 11.1v 1050mAh battery for my heli and it came with a charger. The charger doesn't have any information on it, not even a name. Almost at the end of the wire is a little box that is an adapter for a 3-cell 11.1v Lipoly, a 2-cell 7.4v Lipoly and a 7-cell 8.4v Nicd-MH. Everything is great except for that i don't know how long to charge the 3-cell 11.1v battery. I charged it for about two hours (or at least i think i did) and the packages that make up the battery kind of expanded, whats up with that? DOES THE BATTERY LOSE ENERGY IF YOU LET IT SIT?
Please say whatever you can to help!!



My second thing i wanted to ask is: i have the little ping pong balls as the trainer platforms, does that really effect how high i can go?

< Message edited by AAAsnwbordr -- 3/17/2005 5:41:09 AM >
       Post #: 1

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 6:21:09 AM   
chronus


 

Posts: 116
Joined: 8/24/2004
From: new zealand, NEW ZEALAND
Status: offline 		>>Please say whatever you can to help!!<<

RUN!
that battery doesnt sound to good.

< Message edited by chronus -- 3/17/2005 6:23:15 AM >

(in reply to AAAsnwbordr)
       Post #: 2

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 8:00:41 AM   
acr1346



Posts: 138
Joined: 6/21/2002
From: St. Petersburg, FL, USA
Status: offline 		The quick and dirty answer is the battery is trashed. It has been heated and expanded by overcharging.
It most likely will work if all three cells are expanded. That would mean they all had the same amount
of damage. they are charged to a certain voltage and no more. going beyond that voltage value expands
each cell as it "boils". At the risk of fire damage, I'd say get a proper auto cutoff charger and new
battery, or at the least, a proper charger.

Ping pong balls add weight. If you can lift them at less than full throttle you should be able to
get any hight you want. If you are at or near full throttle, one to two feet is about the limit.

_____________________________

You can fly the Empire State Building if the motor is big enough!

(in reply to chronus)
       Post #: 3

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 3:08:02 PM   
pwterry


 

Posts: 134
Joined: 11/26/2004
From: Richfield, NC, USA
Status: offline 		My HoneyBee 2 came with two 11.1v, 1200mah li-poly batteries. A serious crash damages one (one cell swelled up). That was two months ago, and I still use it. I doesn't seem to have quite the flight time that the other battery has, but works fine otherwise. Note: I do all charging with the battery in a 1 quart glass jar, just in case.

My charger is a wall wart (small black box with outlet prongs), and has an "adaptor" of sorts with jumpers near the battery end. The wall wart puts out 500mah at 12 volts, and I think it loses some at the adaptor. It takes around 4 hours to charge a battery. If your charger has a green/red LED on it, that LED should be green with the charger plugged in and no battery attached and red with a battery attached. If this is true, the LED will go from red to green has the battery reaches full charge. Note: I do not think this charger stops charging on its own - remove the battery when the LED is fully green.

< Message edited by pwterry -- 3/17/2005 3:09:24 PM >

(in reply to acr1346)
       Post #: 4

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 4:08:43 PM   
emosolo



Posts: 334
Joined: 4/23/2003
From: Joburg, Gauteng, SOUTH AFRICA
Status: offline 		Morning,

I downloaded a video once that showed what happens when a Lipoly battery goes wrong. It was not a pleasent sight at all. It goes completly unstable and litterally explodes and bursts into a flare type flame. Do yourselves a favour and dispose of your suspect packs.

Regards,
Solo.

_____________________________

Because it is the way of the cow!
http://www.rc-instruct.com

(in reply to pwterry)
       Post #: 5

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 4:22:32 PM   
Flipper



Posts: 348
Joined: 6/16/2002
From: Peru, IN, USA
Status: offline 		I would find out how to set up the charger before you try and charge anything again. You might have had it set for a different type of battery and that is why it went south. I read enough about charging those things and what happens if you do it wrong to make me be very careful. Try and find some info on the net on your charger and make sure it's set for 11.1 Li-Poly. Just my .02

_____________________________

"The Flipster"
Soil penetration tester

(in reply to emosolo)
       Post #: 6

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/17/2005 4:37:02 PM   
davbow


 

Posts: 159
Joined: 1/10/2004
From: sioux falls, SD, USA
Status: offline 		GUys, spend the money and get the proper charger for lipos.... The new hobbico accucycle works awesome....
i would charge a 11.1 1500 at 1.5 amps for 1 hour..... thats why the new accucycle is awesome...
these lipos are dangerous and must be properly charged.... Always be there to supervise the complete charge too!

(in reply to Flipper)
       Post #: 7

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/18/2005 3:04:50 AM   
avi8er



Posts: 47
Joined: 8/13/2004
From: casselberry, FL, USA
Status: offline 		As someone who has seen the front seat of a vehicle removed by the chemical reaction of a bad Lipo, I say this; Don't play around with these batteries! ! Take them very seriously! Yes, it CAN happen to you, and NO it will not be all right. Have you notice that they don't sell any indoor chargers for lipo? How would you expalin to the family that the house burnt down because of your hobby?

(in reply to davbow)
       Post #: 8

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/18/2005 3:07:19 AM   
avi8er



Posts: 47
Joined: 8/13/2004
From: casselberry, FL, USA
Status: offline 		Oh yeah, and 11.1 volts is too much for that heli. You will melt the motor. Try 7.4 volts, you will not notice the difference between that an nimh, except for 5 times the run time.

(in reply to avi8er)
       Post #: 9

RE: !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!! - 3/18/2005 9:33:27 AM   
R-Rudder


 

Posts: 131
Joined: 9/18/2004
From: , CA, USA
Status: offline 		Show us the picture of the 3-cell lipo you've got. On the older version, the cells are stacked together without any space in between for cooling. They are as hot as lava after only couple minutes of flying and won't last very long.

(in reply to avi8er)
       Post #: 10

Page:   [1]
All Forums >> RC Helicopters >> Electric RC Helis >> !!!!!!!NEE HELP WITH 2 THINGS!!!!!!!!!!
Page: [1]





Jump to: